Personalized Blue Marching Band Sport Youth T-Shirt. Marching Band, the sport for intelligent people is a humorous gift design for band geeks at birthdays, holidays and band camp. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.